Help? Samsung rant.

Sorry if this topic is misplaced, but the only place I could think to put it is the samsung section.

This morning I unplugged my phone from the wall, assuming it was working fine (I just put it in my pocket and left) and went on the bus ride to busch gardens, an amusement park on a school trip.
While checking my phone sometime mid day during this trip, I noticed my phone was not working properly.
Every time I press a key, the screen goes black for 10-20 seconds. It still enters in the numbers/letters, but its annoying. I took out the battery for like 8 hours (I fell asleep with it out ont he ride home), its still not working.
The only cause I could think of this to be is because I was wearing a ... well a fanny pack >.> and I may have hit it against a harness during a roller coaster ride.
If anyone has a solution, I would love an answer. I can't really afford a new phone right now and I'm definitely not due for one.
Peace.

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› See More: Help? Samsung rant.

Every time I press a key, the screen goes black for 10-20 seconds. It still enters in the numbers/letters, but its annoying.

1. Does the screen work otherwise? If you dont push anything does the screen work?
2. Who is your service through? Take it to their service people and ask for an estimate.